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Differential pressure

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Hi,


Sir i'm new to COMSOL... Trying out differential pressure sensor... How to give different pressure input to the both side of the diaphragm? Is it possible?

1 Reply Last Post 2012年9月18日 GMT-4 14:46
Ivar KJELBERG COMSOL Multiphysics(r) fan, retired, former "Senior Expert" at CSEM SA (CH)

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Posted: 1 decade ago 2012年9月18日 GMT-4 14:46
Hi


How do you define your differentil pressure ?
Do you know the total presure on both sides, or of one side plus the difference?

You can write "p0" for one side and "p_tot - p0" for the other BC on the other side. In COMSOl, most entries accept full equations and even linked expresions also to dependent variables. But such cases might make your model highly non linear, which can give you convergence issues, and require further solver tweaking ;)

--
Good luck
Ivar
Hi How do you define your differentil pressure ? Do you know the total presure on both sides, or of one side plus the difference? You can write "p0" for one side and "p_tot - p0" for the other BC on the other side. In COMSOl, most entries accept full equations and even linked expresions also to dependent variables. But such cases might make your model highly non linear, which can give you convergence issues, and require further solver tweaking ;) -- Good luck Ivar

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